Also, add prj.conf options to make the sample builds on more
platforms. Finally, update the sample source to print explicit
"Finished" message, to let user know that the processing is done.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Roughly based on eventfd example code from Linux manpages. Similarly
to other POSIX-compatible sample, Makefile.posix is provided to build
the code on a POSIX system (in this case, as eventfd() is
Linux-specific, this has to be a Linux system).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Paul Sokolovsky